diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
index 8772891..6591e49 100644
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@@ -104,5 +104,10 @@
     <codeStyleSettings language="kotlin">
       <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
     </codeStyleSettings>
+    <codeStyleSettings language="yaml">
+      <option name="LINE_COMMENT_AT_FIRST_COLUMN" value="false" />
+      <option name="LINE_COMMENT_ADD_SPACE" value="true" />
+      <option name="LINE_COMMENT_ADD_SPACE_ON_REFORMAT" value="true" />
+    </codeStyleSettings>
   </code_scheme>
 </component>
\ No newline at end of file
diff --git a/leopard-server/src/main/java/com/lanyuanxiaoyao/leopard/server/controller/TaskTemplateController.java b/leopard-server/src/main/java/com/lanyuanxiaoyao/leopard/server/controller/TaskTemplateController.java
index 2503348..850bbd1 100644
--- a/leopard-server/src/main/java/com/lanyuanxiaoyao/leopard/server/controller/TaskTemplateController.java
+++ b/leopard-server/src/main/java/com/lanyuanxiaoyao/leopard/server/controller/TaskTemplateController.java
@@ -1,6 +1,7 @@
 package com.lanyuanxiaoyao.leopard.server.controller;
 
 import cn.hutool.core.util.IdUtil;
+import cn.hutool.core.util.StrUtil;
 import com.lanyuanxiaoyao.leopard.core.entity.TaskTemplate;
 import com.lanyuanxiaoyao.leopard.server.service.TaskTemplateService;
 import com.lanyuanxiaoyao.service.template.controller.SimpleControllerSupport;
@@ -30,7 +31,7 @@ public class TaskTemplateController extends SimpleControllerSupport<TaskTemplate
       template.setDescription(item.description());
       template.setApplication(application);
       template.setChain(IdUtil.simpleUUID());
-      template.setExpression(item.expression());
+      template.setExpression(StrUtil.format("CATCH(THEN(task_start, ({}), task_end)).DO(task_error)", item.expression()));
       return template;
     };
   }
diff --git a/leopard-server/src/main/java/com/lanyuanxiaoyao/leopard/server/service/TaskTemplateService.java b/leopard-server/src/main/java/com/lanyuanxiaoyao/leopard/server/service/TaskTemplateService.java
index 44cb212..0c890a0 100644
--- a/leopard-server/src/main/java/com/lanyuanxiaoyao/leopard/server/service/TaskTemplateService.java
+++ b/leopard-server/src/main/java/com/lanyuanxiaoyao/leopard/server/service/TaskTemplateService.java
@@ -3,6 +3,7 @@ package com.lanyuanxiaoyao.leopard.server.service;
 import com.lanyuanxiaoyao.leopard.core.entity.TaskTemplate;
 import com.lanyuanxiaoyao.leopard.core.repository.TaskTemplateRepository;
 import com.lanyuanxiaoyao.service.template.service.SimpleServiceSupport;
+import com.yomahub.liteflow.builder.el.LiteFlowChainELBuilder;
 import com.yomahub.liteflow.meta.LiteflowMetaOperator;
 import org.springframework.stereotype.Service;
 
@@ -12,8 +13,16 @@ public class TaskTemplateService extends SimpleServiceSupport<TaskTemplate> {
     super(repository);
   }
 
+  private void validateExpression(String expression) {
+    var response = LiteFlowChainELBuilder.validateWithEx(expression);
+    if (!response.isSuccess()) {
+      throw new RuntimeException(response.getCause());
+    }
+  }
+
   @Override
   public Long save(TaskTemplate entity) {
+    validateExpression(entity.getExpression());
     Long id = super.save(entity);
     LiteflowMetaOperator.reloadAllChain();
     return id;
@@ -21,6 +30,7 @@ public class TaskTemplateService extends SimpleServiceSupport<TaskTemplate> {
 
   @Override
   public void save(Iterable<TaskTemplate> taskTemplates) {
+    taskTemplates.forEach(template -> validateExpression(template.getExpression()));
     super.save(taskTemplates);
     LiteflowMetaOperator.reloadAllChain();
   }